Liquid-dispensing device.



K. L. DIETERLE.

LIQUID DISPENSING DEVICE. APPLICATION FILED APR. 10, 1916.

Patented June 1917.

KARL L. DIETERLE, DE LOS ANGELES,. CALIFORNIA.

LIQUID-DISPENSING DEVICE.

Application filed April 10, 1916.

To all whom it may concern: I

Be it known that I, K.\uL L. Diu'ricmac, a. citizen of the United Statesof America,

. residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented a new and useful Liquid-Dispens ing Device. ofwhich the following is a specification.

This invention relates to a device for dispensing ether, or otherliquids which require to be dispensed in a graduated or regulatedmanner, for example. drop by drop. and the main object of the presentinvention is to provide for regulation of the tlow of the liquid fromthe device and for uniformity v of such flow when so regulated.

Another object of the invention isto provide dispensing means for thestated pur-' pose, in which the container for the. liquid ishermeticallysealed until the time of use.

p A further object of the invention is to enable rescaling of thecontainer after each dispensing operation so as to prevent waste ordeterioration of the liquid by evaporation or otherwise.

The accon'ipanying drawings illustrate an embodiment of my invention,and referring thereto, Figure 1 is a vertical section of the containerprovided with my in'iproved dispensing means. I

Fig. 2 is a vertical section of the container in inverted position,showing the dispens- 1ng means operated to dispense the liquid by drops.

' Fig. 3 is a vertical section of a modified form of the invention.

1 designates a suitable container, which may be of sheet metal or othermaterial, and

. may be provided with ancck 2 which is closed by a. cover 3 securedby'solder or otherwise to the neck 2 after the liquid indicated at 4 isplaced in the container, so as to hermetically seal the container, thiscover 3 consisting, for example, of a disk or plate extending completelyover the neck to close the same. t

The container is provided with means mounted thereon and supportedthereby, for puncturing said cover, consisting, for example, of a screw5 screwing in a boss or projection 6 on the cover 3 and provided withhandle means such as a knurled head I 7 and with a pointed end 8 adaptedto puncture the central portion 3 of the cover 3, said central portion,at least, of the cover being made of comparatively soft metal soSpecification of LettersPatnt.

of the screw may be provided with a packing ring 9 adapted to engage thetop of the boss (3 when the screw is screwed down toward the same toform a tight joint. Screw 5 is preferably provided witha groove 11extending longitudinally thereof orscribed.

In order to provide for entrance of air to the interior of the containerfor displacement of the liquid therefrom, a tube 12 is preferablyprovided extending from near the bottom of the container through thecover 3 and normally closed at its outer end as indicated at 12 tomaintain hermetic sealing of the container. This airvent tube ispreferably formed of soft metal to enable passage of liquid ashereinafter dei as to be readily punctured. 'The knurled head 7 beingregulated by screwing back the screw any desired extent so as to enlargethe opening between the point of the screw and the cover and.if'necessary, to cause groove 11 to extend beyond boss 6 so as tofacilitate leakage of the liquid past the screw. The liquid will thendrop from thehead 7 at a definitely regulated rate so that the device,having'been once set by a skilled operator, the administration of theother, for example, may be left to a comparatively inexperienced personwith instructions to administer it for a certain time atthe regulatedrate. d

When the container is inverted, as stated,

air will pass through the air tube 12 to the upper part of the containerdisplacing the liquid, which therefore flows from the con taineruniformly without interference due to difference of pressure on theinside and outside of the can.

When the dispensing operation has been completed the screw 5 is screweddown to bring the packing 9 into tight engagement with theboss 6 and theouter end of the vent tube 12 is pinched by a suitable instrument toclose the same, the container being thereby' sealed so as to preventfurther escape of liquid by evaporation or otherwise. hen the device isto be used again an additional portion of the tube 12 is cut off, thetube being made long enough to permit several repetitions of thisoperation.

The cover member 3, with the vent tube 12. may be cast in one piece ofsuitable soft metal, and be afterward soldered on to theneck 2, or on tothe surface of a can of any kind, over an opening therein. The coverbeing soft may be readily cut, if desired, to enable the ether can to beused with the usual cork or otherwise.

The puncturable cover member may be applied to the container in otherways. For example. as shown in Fig. 3, the said member, indicated at 16,may be secured to a cork 14: by meansof a tubular projection 19 on saidcover member fitting within a hole in said cork. The edge portion 17 ofsaid cover member may be turned down or crimped to form a tight sealover a flange 18 on the neck 15 of a bottle 20'which may be a chloroformbottle. The construction is otherwise the same as above described. thecover member 16 being of soft metal and having a puncturable part 16adapted to be penetrated by the pointed end of screw- 5 in the samemanner as above explained.

An important feature of this invention is that the means for puncturingthe seal is permanently mounted on the container so that each containeris provided with means for allowing the liquid contained therein to bedispensed, without requiring the use of an additional puncturing device.

A further feature of the invention is that the puncturing means is alsoadapted to cooperate with the punctured portion of the container,operating as a valve seat, to act as a regulating means for the flow ofliquid after the container is punctured, and eventually to act as aclosing and sealing means for the-container.

l. A container for liquid, provided with a puncturable sheet metal sealportion, and a puncturing and regulating device mounted on and supportedby said container to move toward or from said seal portion to puncturethe same and to form a variable dispensing opening.

2. A container for liquids, provided with a puncturable seal portion,and a punctura pointed end and screwing onsaid con-H tainer to causesaid pointed end to puncture the seal or to open or close the openingformed by puncturing the seal, and an air inlet tube extending from nearthe bottom of the container to the outside of the. container, said airinlet tube being of soft metal and being of sufficient length outsidethe container to enable it to be repeatedly cut for opening the tube orpinched for closing the same, and said puncturing means being providedwith packing means for tightly engaging the outside of the container toclose the same.

4. A container for liquids, provided with a puneturable seal portion, aprojection on the container, a screw working in said projection andhaving a pointed end adapted to puncture the seal portion and to cooperate therewith as a valve, and a normally closed air inlet tubecommunicating with the interior of the container and consistingof easilycut material to enable it to be opened for admission of air.

5. A container for liquids, having a portion formed with a screwthreaded opening, a puncturable seal normally closing said opening, ascrew working in said screw threaded opening and'having a pointed endadapted to puncture said seal and to cooperate with the puncturedportion to form a variable dispensing opening, said screw having alongitudinal groove for enabling liquid to pass the screw, and saidscrew having an operating head and provided with a paeking member onsaid head to engage the portion of the container around the screwthreaded opening, to provide for tight closure of the container.

In testimony whereof I have hereunto set my hand, at Los Angeles,California, this 23rd day of March, 1916.

. KARL L. DIETERLE.

